20253454 has 8 divisors (see below), whose sum is σ = 32717160. Its totient is φ = 9347736.

The previous prime is 20253451. The next prime is 20253469. The reversal of 20253454 is 45435202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20253451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389464 + ... + 389515.

It is an arithmetic number, because the mean of its divisors is an integer number (4089645).

Almost surely, 2^20253454 is an apocalyptic number.

20253454 is a deficient number, since it is larger than the sum of its proper divisors (12463706).

20253454 is a wasteful number, since it uses less digits than its factorization.

20253454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778994.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 20253454 is about 4500.3837614141. The cubic root of 20253454 is about 272.5835851661.

Adding to 20253454 its reverse (45435202), we get a palindrome (65688656).

The spelling of 20253454 in words is "twenty million, two hundred fifty-three thousand, four hundred fifty-four".